/**
 * Created with IntelliJ IEDA.
 * Description:
 * User:86186
 * Date:2022-06-06
 * Time:22:06
 */
import java.util.Scanner;

public class Main {


/*描述
在父类Base中定义了计算方法calculate()，该方法用于计算两个数的乘积（X*Y）。请在子类Sub中重写该方法，将计算逻辑由乘法改为除法（X/Y）。注意，当分母为0时输出“Error”。
输入描述：
两个整数
输出描述：
两个整数的商(int类型，不考虑小数情况)
示例1
输入：

6 2

输出：

3

示例2
输入：

1 0

输出：

Error*/
public static void main(String[] args) {
    Scanner scanner = new Scanner(System.in);
    while (scanner.hasNextInt()) {
        int x = scanner.nextInt();
        int y = scanner.nextInt();
        Sub sub = new Sub(x, y);
        sub.calculate();
    }
}

}

class Base {

    private int x;
    private int y;

    public Base(int x, int y) {
        this.x = x;
        this.y = y;
    }

    public int getX() {
        return x;
    }

    public int getY() {
        return y;
    }

    public void calculate() {
        System.out.println(getX() * getY());
    }

}

class Sub extends Base {
    public Sub(int x, int y) {
        super(x, y);
    }

    //write your code here......
    public void calculate(){
        System.out.println(getY()==0?"Error":getX()/getY());
    }

}



  /*      描述
有父类Base，内部定义了x、y属性。有子类Sub，继承自父类Base。子类新增了一个z属性，并且定义了calculate方法，在此方法内计算了父类和子类中x、y、z属性三者的乘积。请补全子类构造方法的初始化逻辑，使得该计算逻辑能够正确执行。
输入描述：
三个整数：x, y, z
输出描述：
三个整数的乘积：x*y*z
示例1
输入：

1 2 3

输出：

6*/
       /* public static void main(String[] args) {
            Scanner scanner = new Scanner(System.in);
            while (scanner.hasNextInt()) {
                int x = scanner.nextInt();
                int y = scanner.nextInt();
                int z = scanner.nextInt();
                Sub sub = new Sub(x, y, z);
                System.out.println(sub.calculate());
            }
        }

}

class Base {

    private int x;
    private int y;

    public Base(int x, int y) {
        this.x = x;
        this.y = y;
    }

    public int getX() {
        return x;
    }

    public int getY() {
        return y;
    }

}

class Sub extends Base {

    private int z;

    public Sub(int x, int y,int z) {
        super(x, y);
        this.z = z;
    }



    public int getZ() {
        return z;
    }

    public int calculate() {
        return super.getX() * super.getY() * this.getZ();
    }

}*/



   /* public static void main(String[] args) {
        Person p = new Person();
        Scanner scanner = new Scanner(System.in);
        while (scanner.hasNextInt()) {
            int age = scanner.nextInt();
            p.setAge(age);
            System.out.println(p.getAge());
        }
    }

}

class Person {

    private int age;

    public int getAge() {
        return age;
    }

    public void setAge(int age) {
        if (age < 0) {
            age = 0;
        }

        if (age > 200) {
            age = 200;
        }
        this.age = age;
    }

}*/